public class Test {
    public static void main(String[] args) {
        PingPongJock pp = new PingPongJock();
        pp.SpeakEnglish();
        pp.study();
        System.out.println("--------------------------");
        BasketballJock bt = new BasketballJock();
        bt.study();
        System.out.println("--------------------------");
        PingPongToach pp1 = new PingPongToach();
        pp1.SpeakEnglish();
        pp1.Teach();
        System.out.println("--------------------------");
        BasketballJock bt1 = new BasketballJock();
        bt1.study();
    }
}
